Bone marrow smears. Hematoxylin-eosin staining of bone marrow smear. Original magnifications: × 25 (A, C); × 63 (B,D) from wild-type (A-B) and fch/fch (C-D) 14-week-old BALB/c mice. No structural abnormalities, no erythroid hyperplasia, and no ringed sideroblasts were observed in fch/fch mouse. EB indicates erythroblast; PMN, polymorphonuclear cell; L, lymphocyte. Images were taken with a DMRB microscope equipped with a Leica objective lens (40×/1.00; Leica Microsystems, Rueil Malmaison, France) and connected to a Sony CCD DXC 950P camera (Sony, Cliche, France). Images were processed using Adobe Photoshop 5.0 (Adobe Systems, San Jose, CA).